Coke-oven.



T. i. MITGHELL.

COKE OVEN.

APPLIOATIOI FILED BOV. 27

m6 man1-m5 Sein; 29, 190s a slams-snm' 1 A ToR/VE Ys T; J. 'MITCHELL'.

con: om. Arrmornol rILsn mmv, n1. 1bos.

Patented :septh 29,1908.

" a annu-anni i.

Alilzu- H lili/f A TTORNEYS H.

"UNITED STATES PATENT TIOBIAS J. MITCHELL, OF CONNELLSVILLE, PENNSYLVANIA.V

COKE-OVEN.

Np. 899,88@ specification o: Letters Patent. ratexid-fs'ept.faeisos,

Application filed November 27, 1906. Serial No. 345,306. i

id i

To all --nrlmm it 11mg/ coacrra: spending to Fig.l l illustratingasllghtini lle it known that', l, l`no.\l.\s J'. MITCHELL, fic-ation in the construction of ll'iel ')\'-i; 4 a citizen of the United States, residing at Similarnumerals oTrcl'erenpai'cenpl (,Ionnollsville, in the county`o Fayette and to indicate correspondiiigiart' i i .3 Slate ol' Pennsylvania, have invented a new the several figures of thedrairin'gs' 60 and usel'ld Colui-Oven, oi' lwhich the follow-'ing The floor l0-of tlie eilen vis dat and is a speeilication. inclined toward one end andexteii ls et This iin-'ention relates to coke ovens, and two walls l1 formed ofbrick 'oifstoneytliinvcn has for its [wincipnl objectto provide an oven opening at bothends, softha a {usheiift 10 of simple construction which may be built, be inserted at olie en'd andi "h`tl'i 5 maintained in working order, and operated oven to discharge tl'1c co'ke..' Iliesidcjthaifs at a much smaller cost thanan'ordinary bcel5 are vertical and are iuhst'aittilillyfpztifalll hive and other types of ovens now in use. with each other th'rougli "t, t 'eir entii further object of the invention is to prolength, while the crown? '1 'dif ixii vide'an oven open at both ends for the inserside wall to 4si 1e'\ vall. fl Froiif` tion of a coke pusher at one end, and the disoven the arch 'extends' inward foi' lionffliis charge of the coke at' the opposite end, the' thickness of the retaining gofalls, a djft li1e top or crown of the oven being inclined or slopes or curves u'wa'rd {1teach 'enil if* curved upward from a oint near each end a-point about'nii -waybf the 'lengtloff tlre 20 to a point about the mi die of the length of oven, and at this point jis' Y? 75 the oven wall, and at this p'oint is a to openthrough whichfthecal Inajfv ing throu rh which the oven may be c iarged. form the charge.' 'jj e A still urther object of the invention is to The shape of the el owr 1 issltclr that'thfe provide an oven' of this type in which the top entire charge ,may bc'fduinp'cd in,l or crown is inclined or curved upward from tion being s'uicicnt to ac conhn'tlat the 50 center to form a combustion chamber for the extent, and after 'thef iser'tio more perfect combustion of the ases disthc centrale); highest'eoin tilled from the coking coal and by wlieh com order to renderfthefthic 'nessd yg 30 bus-tion the crown or roof of the oven hethe charge apprqxiinate'lyequ' ltlnpngiiilt. g5 cooles intensely heated, thereby increasing The 'constructlon'of the slop'nig the ellieiency of the oven. hy reflecting the oven affords acombustiqn l" t'he heat downward on the coking coal, and result burning ofthe fwlii c li." v e l rn in a superior quality of coke, and, \vill,'fur the coking coal, thereby. ,',roduel'ngtei; thermorc, permit the consumption of the uisitc heat foriga'i @and fectlgol'mg, 90 gases without material waste ofthe carbon of and the heat is rel eeteili l )`\`v x 1 v a `rl `o the coal. coking coal, producing a' speriordr lof With these and other objects in view, as silvery coke. 'The air nei: s' "ytosup'iii'tl" will more fully hereinafter a pear, the invencombustion is admitted through both en s of tion consists 1n certain nove features of conthe ovcn, so that the heat is practically um- 95 struction and arranvement of parts,l1erein forni throughout, and the quantity ol" air nih-r fully de scrilmii, .illustrated in thencadmitted may be governed in the usual manconlpanymgdrawings,andparticularlypointnvr by closing the end openings to a greater ed ont in the appended claims, it hein" unor loss extent. 'l`he.charge opening ls not l1:'. derstood that various changes in tho iin-in, closed during the entin: eokiiig process, and 1,00

proportions, size and minor details of the the gases distilled from the iuantity of coal structure may he made without departing arc consumed as rapidly as tiey are [o rlncd, from the spirit or sacrificing any of the adthus maintaining the ncccssar f heat without vantagos of the invention. consuming anyol" the solidcar 'nonol'thecoaL o .lin the :uzmlnpanying drawings#-Figlll'c l After the coking operation is coinplote, the 105 is n. lcngitudinal sectional View of a, coke oven brick work at the ends ol the oven ls knocked constueled in accordance with the invendownand streams ol' water are turned |nto tion. Fi". 2 a sectional plan View o f the the oven to extinguish the llame and oo ol saine, lfig. 3 is an end elevation partly in down to the pro )er tenumratun. for dissection of the oven. Fig. 4 is a View corrocharging,r the finis led product. A suit-able 110 .pusher is thenintroduceduthrough one of the openings at one end of the oven and the body A 15 suitable size for handling.

.One of the in ost important features of the l invention is the departure from the ordinary bee hive type of oven now in common use, Where .there is difficulty in withdrawing the product and diiculty in controlling even 'and perfect combustion.l The oven forming the subject ofthe present invention is so 'ar- .ranged that the chae of coal may be dumped in andlevel 'o within a very short time, while the necessary amount of air to support combustion is allowed to enter at both ends andthe heat redected from thel sloped crown is suflieient te insure the quick generation of gases when the' operation of coking begins. In the ordinary beehive type of oven, it requires fromV three to five hours worlof one man to withdraw the charge, and

i a large portion of the coke is broken into comparatively small fragments, while in an oven constructed. in accordance with' the present invention the entire ymass of coke may be forced out in practically a; single block, and

in less than a minute, thus not only saving time, but, also, saving considerable expense 40 by preventing the loss of heat, the oven being retained at a very high temperature, so

that the coking process may immediately after the dumping of another charge into the oven.

It-wll, of course, be understood that the g shape of the 'roof of the oven may be altered jin many ways without de arting from the j invention, and it ma be s oped on straight lines, as indicated in 1, or .on curved and eoases length' of the oven and there provided'with a l charging` o ening. v.

2. A co e oven having fa substantially level floor, end retaining wallsea'ch with an opening of the same size as the opening in the other wall, a crown sloping continuously'mpwardfrom the end retaining' walls to an ap proximately central point and. there .provided with a charging opening, said crown being arched in a direction at 'r1 ht anglesto the len th of the oyen, and parael side walls extending through and from one o ening to and through the other opening Aan approximately to the top of the crown adjacent to the charging opening therein.

3. A coke oven having a-central truiui'e'l.'` l hole in its roof, the length of the oven-chamber and the height of the roof be so pros. 8,0

coal deposited by gravity throughthe trunnel hole reaches said .trunnel hle, the charge' when leveled off will fillwthesovensubstan-H tially to the :level of the draft openings. 853, I

4. A coke oven having. a substantially level -loor and provided with. parallel side, walls, higher at he middle" than at -the ends said oven bei open at both ends from W to wall to provide an unobstructed,- free pas- 9o sage from end .to end, and a crown risi from the ends and provided about mdw'aylb its length with a trunnel-hole. y

In .testimony thatl claim thefo oing as mygown, I'have herto aiiixed my signature 95 in the presence of two witnesses.

' THOMAS J. MITCHELL. Witnesses: i

' J. M. SMITH, 

